AT-One operates a wide variety of test aircraft:

• Airbus A320 ATRA (Advanced Technology Research Aircraft)
  
• VFW 614 ATTAS (Advanced Technologies Testing Aircraft System)
  
• Cessna Citation II
  
• Dornier DO228
  
• Fairchild Swearingen Metro II
  
• Eurocopter EC135 FHS (Flying Helicopter Simulator)
  
• Eurocopter BO105 ATTHeS (Advanced Technologies Testing Helicopter System
  

The test aircraft are equipped with a large array of test equipment and can be modified according to the needs of specific research tasks.